Wrench



April 7, 1925. 1,533,040

I J. R. SINGER ET AL "WRENCH Filed Aug 11, 1923 Patented Apr. 7, 1925.

UNITED STATES 1,533,04e PATENT OFFICE.

JOHN R. SINGER, OF ELWOOD, AND JOHN E. BEIGE, O'F BLUFFTON, INDIANA;SAID SINGER ASSIGNOR TO SAID BEIGE.

VIRENCH.

Application filed August 11, 1923. Serial No. 656,767.

T all 1071 am it may concern Be it known that we, JOHN R. SINGER andJOHN FRANK Baron, citizens of the United States, residing at Elwood andBluffton, respectively, in the counties of Madison and ells,respectively, and State of Indiana, have invented certain new and usefulImprovements in renches, of which the following is a specification.

This invention relates to an improved wrench and seeks, among otherobjects, to provide a device of this character which may be quicklyadjusted.

The invention seeks as a further object, to provide a wrench whereinafter the wrench jaws have been engaged with the work, the movable jawof the wrench may be shifted to clamp the work.

And the invention seeks, as a still further object, to provide a wrenchcharacterized by structural simplicity and which may thus bemanufactured and sold at moderate cost.

Other and incidental objects will appear hereinafter.

In the drawings:

Figure 1 is a side elevation of our inr proved wrench, parts beingbroken away and illustrated in section,

Figure 2 is a view looking at the rear edge of the wrench, and

Figure 3 is a transverse sectional View on the line 33 of Figure 1,looking in the direction of the arrows.

In carrying the invention into effect, we employ a shank rectangular incross section, and formed on the shank at one end thereof is a fixed jaw11, the shank providing a handle at its opposite end portion. Slidableupon the shank to coact with the fixed jaw is a movable jaw 12 andarranged .in the rear of the jaw 12, is a block 13. This block is alsoslidably fitted upon the shank, and screwed or otherwise detachablysecured at one end in the shank receiving aperture of the jaw 12 tooverlie the rear edge of the shank is a metal connecting strap 14extending freely through the shank receiving opening in the block 13 andprovided with an outwardly turned stop lug 15.

Formed in the block 13 from the forward end thereof is a recess 16 andcommunicating with said recess is a reduced cylindrical bore 16, therebeing a slot 17 extending from the inner end of the recess and opennearthe outer end thereof with an annular flange or shoulder 20 slidablyfitting :the recess 16, and bearing'a'gainst said flange is a spring 21retained within the recess by a plug 22 threaded into the recess at itsouter end. Thus, the spring will function to urge the plunger intoengagement with the rack, and pivoted in the slot17 ofthe block is alever 23 cooperating at its inner end with the flange 20 so that thelever may be rocked for retracting the pin or'plunger. Connecting thejaw 12 with the block 13 at the forward side of the shank is a right andleft threaded adjusting screw 24: provided midway between its ends witha preferably milled thumb disc 25.

As will now be seen in view of the fore-- going, the wrench shank may begrasped when, by rocking the lever 23 to retract the pin or plunger 19,the jaw 12 and block 13 may be shifted as a unit along the shank toadvance the jaw toward the fixed jaw 11 to engage the work. Uponthe'release of the lever 23, the movable jaw will then be locked inadjusted position when the adjusting screw 24 may be rotated forclamping the work between the jaws. Slipping of the wrench may thus beprevented while, as will be seen, adjustment of the wrench may be easilyand quickly effected. In Figure 1 of the drawings, the screw 2 is shownas having been turned to shift the jaw 12 and block 13 toward each otherto the'limit of their movement in such direction and, as will be noted,the adjusting screw may be counter-rotated for shifting the movable jawa considerable distance in the opposite direction. However, to preventdisengage ment of the screw from the jaw 12 and block 13, when the screwis thus turned, we provide the connecting strap, the lug 15 of which isdisposed to abut the. flat face or abutment 22 of the block for limitingthe jaw and block in their separating movement before the adjustingscrew becomes released therefrom. Complete separation of the jaw andblock will thus be prevented and accidental loss of the adjusting screwobviated.

Havingthus describedthe invention, what is claimed as new is A wrenchincluding a shank having a fixed aw, a movable aw carried by the shankto cooperate with the fixed jaw, a

the ed'geof the block, a pin mounted in the cylindrical: bore andadapted to engage the shank and lockthe block thereto, an annular flangeformed on the pin and fitting within the recess, a removable plugclosing the outer end of the recess, a spring housed within the recessbetween the plug and the flange on the pin, a lever pivoted in and proecting from the slot and having its 1nner end bearing against the lnnerface 0i andmovalole aw for adjusting the movable jaw with respect tothefixed jaw, and a connecting strap secured to one end of the movable jawand extending through the block and provided at its free endwith anoutwardly turned lug adapted to bear against the adjacent face of theblock for limiting the'movable jaw and said block in their separatingmovement.

the flange, means coacting between the block In testimony whereof we oursignatures. 1

JOHN R. SINGER.) L 8. JOHNYF. BRICE. [m 5.

